REVISION OF THE BUPREST1DA2 OF THE UNITED STATES. 
195 
tolerably deeply emarginate, and the middle tibia? are armed with a large subacute inter¬ 
nal tooth, the inferior margin of which, as well as the tibia, is distinctly serrate; the ster- 
num is also more hairy than in the female. The last ventral segment of the female has 
the lateral teeth rounded, the middle one acute. 
2. D. divaricata, acnea, vcl aureo-aenea, saepe pruinosa, thorace latitudine duplo brcviorc, lateribus antice 
rotundatis, postice subsinuatis, lateribus confluenter, medio discrete punctato, subcanaliculato, vittaque obsolcta 
subbevi utrinque notato, utrinque pone medium oblique impresso; elytris punctatis, striis internis distiuctis, in- 
terstitiis altcrnis spatiis oblongis laevibus parura elevatis variegatis, postice oblique attcuuatis, prolongatis, plus mi- 
nusve divaricatis, subtruncatis, sutura prominula, subtus parum pubescens. Long. -63 — -90. 
Lee. Agassiz' Lake Superior, 227: Fitch, Trans. Agr. Soc. New York, 1856, 366. 
Buprestis divaricata Say, Journ. Acad. 3, 163: Trans. Am. Phil. Soc. 6, 158. B. ( Slcnuris ) div. Kirby, 
Fauna Bor. Am. 154. B. ( Diccrca ) div. Harris, Ins. Inj. to Veg. 42. 
Buprestis acuminata J Lap. & Gory, Mon. Buprest. 2, 106, tab. 27, f. 145. 
Diccrca dubia Mels. Proc. Acad. 2, 142. 
Dicerca aurichalcea Mels. Proc. Acad. 2,142. 
Dicerca parumptmetata Mels. Proc. Acad. 2, 143. 
Middle States, abundant: the larva burrows in the wood of the cherry and the beech. 
The thorax from the arrangement of the sculpture has the appearance of having 4 faint 
costm. The sexual characters are as in D. prolongata, except that the inferior margin of 
the tooth of the middle tibiae of the male is not as strongly serrate. The prolongations 
of the elytra vary somewhat in length and degree of divergence, and I have one specimen 
in which they are very short and closely applied to each other, but the edge of the elytra 
near the apex shows a fold, which must have resulted from an injury received in an earlier 
state of development. The specimens described by Dr. Melsheimer must all be referred 
to these individual variations. Say’s description would leave it in doubt whether this or 
the next species were meant by him, but specimens were furnished by Dr. Harris to Mr. 
Kirby, and have been described by the latter sufficiently to attach the name to the species 
now under consideration. For this reason I have been obliged to reject the names of Dr. 
Melsheimer for this, and to propose a new name for the next species. 
3. D. cauda ta, acnea, saepe pruinosa, punctata, tborace latitudine sesqui breviore, a basi antrorsum angustato, 
lateribus late rotundatis, lateribus dense, medio discrete punctato, subcanaliculato, lineaque obsoletissima subltcvi 
utrinque notato, et obsolete oblique impresso; elytris striis vix distinctis, interstitiis alternis spatiis oblongis lmvibus 
variegatis, ad apicem valde prolongatis divaricatis, subtruncatis, sutura baud prominula. Loug. -6 — -7. 
Middle and Western states. I have received this species from Dr. Melsheimer as D. 
divaricata, but for reasons above given I cannot adopt his view. It only differs from the 
last by the form of the thorax, which is narrowed from the base to the apex by the less 
distinct clytral striae. The sexual characters are precisely as in the last. 
vol. xi. — 2G 
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